屏幕截图 2024-01-27 165732.png

cities这一段没理解

springboottest.zip

"C:\Users\whn552\idea\IntelliJ IDEA 2019.3.2\jbr\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=127.0.0.1:58990,suspend=y,server=n -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true -javaagent:C:\Users\whn552\.IntelliJIdea2019.3\system\captureAgent\debugger-agent.jar -Dfile.encoding=UTF-8 -classpath "F:\springboot\springboottest\springbootjdbc\target\classes;F:\moven\org\springframework\boot\spring-boot-starter-web\2.6.1\spring-boot-starter-web-2.6.1.jar;F:\moven\org\springframework\boot\spring-boot-starter\2.6.1\spring-boot-starter-2.6.1.jar;F:\moven\org\springframework\boot\spring-boot\2.6.1\spring-boot-2.6.1.jar;F:\moven\org\springframework\boot\spring-boot-autoconfigure\2.6.1\spring-boot-autoconfigure-2.6.1.jar;F:\moven\org\springframework\boot\spring-boot-starter-logging\2.6.1\spring-boot-starter-logging-2.6.1.jar;F:\moven\ch\qos\logback\logback-classic\1.2.7\logback-classic-1.2.7.jar;F:\moven\ch\qos\logback\logback-core\1.2.7\logback-core-1.2.7.jar;F:\moven\org\apache\logging\log4j\log4j-to-slf4j\2.14.1\log4j-to-slf4j-2.14.1.jar;F:\moven\org\apache\logging\log4j\log4j-api\2.14.1\log4j-api-2.14.1.jar;F:\moven\org\slf4j\jul-to-slf4j\1.7.32\jul-to-slf4j-1.7.32.jar;F:\moven\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;F:\moven\org\yaml\snakeyaml\1.29\snakeyaml-1.29.jar;F:\moven\org\springframework\boot\spring-boot-starter-json\2.6.1\spring-boot-starter-json-2.6.1.jar;F:\moven\com\fasterxml\jackson\core\jackson-databind\2.13.0\jackson-databind-2.13.0.jar;F:\moven\com\fasterxml\jackson\core\jackson-annotations\2.13.0\jackson-annotations-2.13.0.jar;F:\moven\com\fasterxml\jackson\core\jackson-core\2.13.0\jackson-core-2.13.0.jar;F:\moven\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.13.0\jackson-datatype-jdk8-2.13.0.jar;F:\moven\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.13.0\jackson-datatype-jsr310-2.13.0.jar;F:\moven\com\fasterxml\jackson\module\jackson-module-parameter-names\2.13.0\jackson-module-parameter-names-2.13.0.jar;F:\moven\org\springframework\boot\spring-boot-starter-tomcat\2.6.1\spring-boot-starter-tomcat-2.6.1.jar;F:\moven\org\apache\tomcat\embed\tomcat-embed-core\9.0.55\tomcat-embed-core-9.0.55.jar;F:\moven\org\apache\tomcat\embed\tomcat-embed-el\9.0.55\tomcat-embed-el-9.0.55.jar;F:\moven\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.55\tomcat-embed-websocket-9.0.55.jar;F:\moven\org\springframework\spring-web\5.3.13\spring-web-5.3.13.jar;F:\moven\org\springframework\spring-beans\5.3.13\spring-beans-5.3.13.jar;F:\moven\org\springframework\spring-webmvc\5.3.13\spring-webmvc-5.3.13.jar;F:\moven\org\springframework\spring-aop\5.3.13\spring-aop-5.3.13.jar;F:\moven\org\springframework\spring-context\5.3.13\spring-context-5.3.13.jar;F:\moven\org\springframework\spring-expression\5.3.13\spring-expression-5.3.13.jar;F:\moven\org\slf4j\slf4j-api\1.7.32\slf4j-api-1.7.32.jar;F:\moven\org\springframework\spring-core\5.3.13\spring-core-5.3.13.jar;F:\moven\org\springframework\spring-jcl\5.3.13\spring-jcl-5.3.13.jar;F:\moven\org\springframework\boot\spring-boot-starter-thymeleaf\2.6.1\spring-boot-starter-thymeleaf-2.6.1.jar;F:\moven\org\thymeleaf\thymeleaf-spring5\3.0.12.RELEASE\thymeleaf-spring5-3.0.12.RELEASE.jar;F:\moven\org\thymeleaf\thymeleaf\3.0.12.RELEASE\thymeleaf-3.0.12.RELEASE.jar;F:\moven\org\attoparser\attoparser\2.0.5.RELEASE\attoparser-2.0.5.RELEASE.jar;F:\moven\org\unbescape\unbescape\1.1.6.RELEASE\unbescape-1.1.6.RELEASE.jar;F:\moven\org\thymeleaf\extras\thymeleaf-extras-java8time\3.0.4.RELEASE\thymeleaf-extras-java8time-3.0.4.RELEASE.jar;F:\moven\org\springframework\boot\spring-boot-starter-jdbc\2.6.1\spring-boot-starter-jdbc-2.6.1.jar;F:\moven\com\zaxxer\HikariCP\4.0.3\HikariCP-4.0.3.jar;F:\moven\org\springframework\spring-jdbc\5.3.13\spring-jdbc-5.3.13.jar;F:\moven\org\springframework\spring-tx\5.3.13\spring-tx-5.3.13.jar;F:\moven\mysql\mysql-connector-java\5.1.38\mysql-connector-java-5.1.38.jar;F:\moven\com\alibaba\druid\1.1.12\druid-1.1.12.jar;C:\Users\whn552\idea\IntelliJ IDEA 2019.3.2\lib\idea_rt.jar" com.example.springbootjdbc.SpringbootjdbcApplication
Connected to the target VM, address: '127.0.0.1:58990', transport: 'socket'
OpenJDK 64-Bit Server VM warning: Sharing is only supported for boot loader classes because bootstrap classpath has been appended

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v2.6.1)

2021-12-01 18:46:36.007  INFO 4724 --- [           main] c.e.s.SpringbootjdbcApplication          : Starting SpringbootjdbcApplication using Java 11.0.5 on DESKTOP-E5L6QQN with PID 4724 (F:\springboot\springboottest\springbootjdbc\target\classes started by whn552 in F:\springboot\springboottest)
2021-12-01 18:46:36.010  INFO 4724 --- [           main] c.e.s.SpringbootjdbcApplication          : No active profile set, falling back to default profiles: default
2021-12-01 18:46:36.786  INFO 4724 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2021-12-01 18:46:36.793  INFO 4724 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2021-12-01 18:46:36.794  INFO 4724 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.55]
2021-12-01 18:46:36.795  WARN 4724 --- [           main] o.a.catalina.core.AprLifecycleListener   : This listener must only be nested within Server elements, but is in [TomcatEmbeddedContext].
2021-12-01 18:46:36.795  INFO 4724 --- [           main] o.a.catalina.core.AprLifecycleListener   : Loaded Apache Tomcat Native library [1.2.31] using APR version [1.7.0].
2021-12-01 18:46:36.795  INFO 4724 --- [           main] o.a.catalina.core.AprLifecycleListener   : APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true], UDS [true].
2021-12-01 18:46:36.795  INFO 4724 --- [           main] o.a.catalina.core.AprLifecycleListener   : APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
2021-12-01 18:46:36.798  INFO 4724 --- [           main] o.a.catalina.core.AprLifecycleListener   : OpenSSL successfully initialized [OpenSSL 1.1.1l  24 Aug 2021]
2021-12-01 18:46:36.847  INFO 4724 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2021-12-01 18:46:36.848  INFO 4724 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 783 ms
2021-12-01 18:46:36.883  WARN 4724 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcConfiguration': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'jdbc.driverClassName' in value "${jdbc.driverClassName}"
2021-12-01 18:46:36.886  INFO 4724 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2021-12-01 18:46:36.900  WARN 4724 --- [           main] o.a.c.loader.WebappClassLoaderBase       : The web application [ROOT] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.base@11.0.5/java.lang.Object.wait(Native Method)
 java.base@11.0.5/java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:155)
 app//com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:43)
2021-12-01 18:46:36.908  INFO 4724 --- [           main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-12-01 18:46:36.925 ERROR 4724 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcConfiguration': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'jdbc.driverClassName' in value "${jdbc.driverClassName}"
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.13.jar:5.3.13]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.13.jar:5.3.13]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:730) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:302) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.1.jar:2.6.1]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) ~[spring-boot-2.6.1.jar:2.6.1]
    at com.example.springbootjdbc.SpringbootjdbcApplication.main(SpringbootjdbcApplication.java:10) ~[classes/:na]
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'jdbc.driverClassName' in value "${jdbc.driverClassName}"
    at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:180) ~[spring-core-5.3.13.jar:5.3.13]
    at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126) ~[spring-core-5.3.13.jar:5.3.13]
    at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239) ~[spring-core-5.3.13.jar:5.3.13]
    at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210) ~[spring-core-5.3.13.jar:5.3.13]
    at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:175) ~[spring-context-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:936) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1321) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119) ~[spring-beans-5.3.13.jar:5.3.13]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.3.13.jar:5.3.13]
    ... 17 common frames omitted

Disconnected from the target VM, address: '127.0.0.1:58990', transport: 'socket'

Process finished with exit code 1
----------------------------------------------------

springbootthymeleaf.zip